(Amy B Wang) At first, Kenneth Walton thought the Arizona state trooper following him and his 7-year-old daughter wanted to warn him of a broken taillight.

They were in a rental car, on a stretch of Interstate 40 between Las Vegas and Flagstaff, Ariz., on what was supposed to be a fun Grand Canyon vacation. It was dark, and Walton knew he hadn’t been speeding, so — not thinking much of it — he pulled over on an off-ramp, rolled down his driver’s side window and waited.

That’s when things went “terribly awry,” according to the San Francisco man’s account of what happened last Thursday.

“Tonight, I was arrested at gunpoint by an Arizona highway patrol officer who threatened to shoot me in the back (twice) in front of my 7-year-old daughter,” Walton wrote on Facebook, hours after the incident. “For a moment, I was certain he was going to kill me for no reason. I’m alive, and I need to share the story.”

Would it surprise you to know that, apparently, the First Amendment is reserved ONLY for those citizens that choose NOT to criticize the American Police State? If your answer is “yes,” then you obviously haven’t been paying attention!